Pallet mechanism for ore-sintering machines



R. L. LLOYD PALLET MECHANISM FOR ORE SINTERING MACHINES 4 ginal Filed 0ct. 27. 1919 5' Sheets- Sheet 1 R. L.- LLOYD 4 v PALLET MECHANISMFOR' ORE smmune MACHINES Original Filed ,Odt. 27,1919 s'sh'e ts-sheet 2 Get. 23, 1923.

R. L. LLOYD PALLET MECHANISM FOR ORE SINTERING MACHINES 5 Sheets-Sheet 5 Original Filed Oct. 27, 1919 R. L. LLOYD PALLET MECHANISM FOR ORE SINTERING MACHINES Oct. 23, 19523. "1,71,402

Origin al Filed Oct 2'7. 1919 5 Sheets-Sheet 4 frzveuiar @cit.23,11923. M vmvmm R. I... LLOYD PALLET MECHANISM FOR ORE SINTERING MACHINES inal Filed Oct. 27. 1919 5 Sheets-Sheet 5 fwrerwzar QKMGE 1 (m -0k PATENT OFFICE.

RICHARD L. LLQY-D, OF NEW YORK, N. Y., ASSIGNOR TO DWIGHT & LLOYD SINTERING COMPANY, OF NEW YORK, N. Y.,

A CORPORATION OF DELAWARE.

PALLET MECHANISM FOR ORE-SINTERING MACHINES.

Application filed October 27, 1919, Serial No. 333,488. Renewed January 29, 19,23.

To all whom it may concern:

Be it known that I, RICHARD L. LLOYD, a citizen of the -United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Pallet Mechanism for Ore-Sintering Machines, of

which the following is a. specification, reference being had therein to the accompany- .ing drawing.

This invention relates to improvements in the pallets or carriers used in apparatus for roasting and sintering ore and for analogous purposes, where each pallet or carrier is a separate unit arranged to be used in connection with other similar pallets that move as a train, end to end, when in working operation.

Apparatus of the kind in connection with which the present improvements may be used is represented in Figs. 1 and 2, where Fig. 1 is a top plan view and Fig. 2 is a side elevation. Fig; 3 is a top plan View of one of the pallets or carriers detached, the bottom or grate thereof being removed. Fig.4 is an end view of the carrier as shown in Fig. 3. Fig. 5 is a View, the left end art being in longltudinal section and the r1ght hand part in end view, of the pallet shown in Figs. 3 and 4. Fig. 6 is a detail transverse sectional' view, enlarged, parts being broken away, taken on the plane of the line VI-VI of Fig. 3, the grate-bar and holder being shown in position. Fig. 7 is a detail view in elevation illustrating one of the clamping plates for holding the grate bars in position; Fig. 8 is a vertical sectional view of the bar represented in Fig. 7. Figs. 9 and 10 are transverse sectional views through the right hand end portions of a pallet, and of the parts of the apparatus adj acent thereto when the pallet is in working position, illustrating two forms of air seals located between the moving pallet and the stationary air box of the apparatus. Fig. 11 shows a plan view of one-of the grate sec tions, detached.

In the drawings, 2 designates the framework of the apparatus, and'3, 3 independent carriers, hereln termed pallets, adapted to support and carry through the apparatus need not be here given. Sufiice it to say the pallets, WlllCll are provided with. wheels 6, 6, are supported upon rails 4, located in the upper part of the apparatus, during the working run of the. pallets, and upon rails 5 1n the lower part of the apparatus, during their return run. The pallets are caused to move slowly in the directions indicated by the arrows, Fig. 2, through the instrumentahty of large driving sprocket wheels 7 that are rotated by power from a source not shown, through a train of speed reducing gearing 13, Fig. 1. Near the delivery end of the apparatus are arranged a pair of idler sprocket wheels 10 preferably of a size corresponding with the driving sprocket wheels 7 and engaging with the pallets in the same manner as the drive wheels. This arrangement of gearing for moving the pallets constitutes the subject-matter of another ap li cation and need not therefore be described more in detail. As the pallets move along the" rails 4 the material which they car is subject to transverse air currents induce by suitably braced by the connecting bars 12.

These pallets are preferably open-endedthat is without end walls-so that when arranged in a train, end to end, a continuous channel is formed bounded by the side walls 9, and the material, as for instance, fine pulverulent ore, extends in a continuous elongated sheet or layer from pallet to pallet. Alongside each pallet are the walls 31 which extend, when the pallets are in the positions indicated in Figs. 4 and 6, some distance below the plane of the bottom edges of the cross bars 11. Each pallet is provided at its sides with bearings 14, in which are mounted the axles 15 on which are mounted the supporting wheels 6.- Upon the same shafts 15 and located between the wheels 6 and the bearings 14 are rollers 16, that constitute lateral contact members carried by the pallet, with which engage the sprocket teeth- 23' of the wheels 7 and 10 of the apparatus.

In order to constitute a ervious support for the material being carried by the pallets may be of any suitable construction to suit the material the pallets are intended to there should be maintained, between the movement inv the pallets.

"securing plates 19 or the pins to hold the grates.

' a perforated ledges 18 along the sides of the pallets at the bases of the side walls 9. They are held in place by clamping plates'19 secured to the side walls 9 by bolts 22 that pass through apertures 26 in the said side walls. These securing plates are provided .along their lower edges with projections 20 adapted to enter recesses 21 formed in the upper faces at the ends of the grate bars, see Fig. 6, by which the latter are held from longitudinal Other means for holding'the' grates in position are pins 24 adapted to be'seated in apertures 25 provided therefor'in theside walls of the pallets and also adapted to have their inner ends rest in said recesses 21. Either the 24 can be used Some forms of the latter can be secured to better advantage by the use of the plates, but for others the pins are preferable, And the pallet-s are constructed "sof jthat either form of clamp or fastener my be used.

As'each pallet in its travel along the working run of its course passes the open end 'of"*an'air box 8, it is necessary that pallet and the air box, practically air-tight connections, in order that the air' that is caused to pass through the box, whether moving upwardly or downwardly, shall be forced through the material carried by the pallet, for which reason it is provided with grate such as has been described. ln order to provide for these airtight joints the following arrangement is employed:

'Referring first to Fig. 9, 30 indicates a wear strip the outer face of which is adapted to bear against the inner face of the wall 31, these contacting faces being finished to fit one another accurately and to form an air-tight joint when in engagement. The strip 30 is seated in a recess or rabbet 29 formed in the flange of a frame 27, supported by. longitudinal T-beams 28 and the skirt 32 of which fits the open end of an air box 8. The strip 30 is secured to the frame by' bolts 38. The sealing strips, instead of being seated in recesses formed in the outer vertical faces of the frames 27,

'may be secured to the upper longitudinal edges of these frames as 10, where the strips'30 secured in this manner by means of the bolts 83'. The strips 30 are of such width that they project laterally beyond the vertical {upper edges of the frame 27 so as to engage in a-face of the wall 31.

It will be understood that there is a series of the frames or supports 27 extending represented in Fig. are represented as aforesaid, carry. "The endsof the grate'bars rest upon ranged in a series along the mainframe, eachbeingcastwith the'h'orizontal flange'parts resting, as on the main frame as at 28, and also cast With-"the inwardly sloping walls or fiangesfifi, I

Independent air boxes 37, 37 are aralong-the frame. Each is formed with vertical side walls 38, of

sheet metal, a front 'wall 39" and a rear wall 40, the latter converging to a closed bottom at 41. An air forcing apparatus is connected to each air box independently of the others, such as a fan 44 and ducts i5, ie.

The upper edges of the side walls of these boxes are at 43 secured to frame elements 27. v

The packing device extends continuously, in alignment, along the series of independent air boxes and the pallets are so shaped that each passes from box breaking the air-tight connection, each being cast with the down extendingfiange walls 31 which fit tionary, aligned packing, and also cast with supports for the wheel shafts which are so related to the packing devices that the latter are maintained tightly together as the pallet moves along the system; and each pallet is cast with transverse spaced bars integral with the side wallsof the pallet so that it is held in proper relation to the packings on both sides, the transverse bars being adapted to support a series of rigidly detachable fastened grate sections.

The guideway a part along which they move when operat ing, a part along which they return when idle, and connecting end parts, this guideway holding them in an orbit .thatenclcses the series of independent boxes.

What it claim is:

1. In a mechanism for desulphuriaing treating ore, the combination of the main frame, the air boxes arranged in series and supported by said frame, means for forcing 2.1;.

air through said boxes,'the guideway along the upper part of the frame, the series of pallets on the said guideway, each cast with downward projecting flange walls adapted to fit air tight with the air boxes, and cast i with vertical walls and transverse bars integral with the vertical walls and with the flange walls, said transverse bars being adapted to support a series of detachable grate sections, and carrying means for hold the supports or to box without tightly against the eta--- for the pallets comprises I secured to the said supporting series of independent air boxes, each formed with a closed bottom, side walls secured to the support 27 and downward converging transverse Walls, ore carrying pallets with apertured grates movable along the air boxes, each having downward pro ecting flange walls and laterally projecting stud shafts adapted to carry wheels fitted way, and detach-able packing devices intermediate of the flange walls and the air box supports at 27.

3. In a mechanism for desulphurizing or treating ore, the combination of the longitudinally extended main frame, the guide-- way in the upper part of said frame, a series of cast supporting plates such as 27 supported on the main frame and formed with inward sloping walls, a series of independent air chambers each tapering inward to a closed bottom and having sheet side walls lates 27, and a series of ore carrying pallets movable along the guideway and above the air boxes, each having downward projecting flange Walls and intermediate stationary air tight packing devices between said flange walls and the supporting plates.

4:. In a mechanism'for desulphurizing or treating ore. the combination of a longitudinally extended main frame, a guideway for supporting pallets comprising a section along which they move when in operation, a section along which they are returnable when idle and connecting sections, a series of independent air boxes surrounded by th to said guide-- said guideway and adapted to have'air pass through them independently, and a series of pallets movable along said guideway across the air boxes successively and each pallet having down projecting flange walls fitted air tight to stationary packing devices supported at the upper edges of the air boxes. 5. In a mechanism for desulphurizing or treating ore, the combination with the main frame, the track rails, the series of independentair boxes, the packing device extending continuously in alignment along the series of air boxes, and the series of pallets mounted'on wheels on said track, each cast with spaced transverse bars and with down projecting flange walls tion with the said aligned packing'device, said transverse bars being adapted to support a series of grate sections with apertures communicating with said air boxes, and means for detachably securing said grate sections to the pallet bodies.

' 6. In a mechanism for desulphurizing or treating ore, a series of pallets each formed with a body having uprising sidewalls, a series of spaced transverse bars and down projecting flange walls, all cast integrally together and adapted to have a series of grate sections detachably supported on said transverse bars, and w eel supports connected to and extending laterally from the sidev walls and adapted to have track wheels mounted thereon, substantially as set forth. In testimony whereof I affix my signature.

RICHARD L. LLOYD. if

for air tight connec- 

